Shuttle



|Nyr-:NToR- i Luzkgb lavza/ BY v mw MMG/M ATTORNEYS L. PAVIA Dec. 3,l `1940.

SHUTTLE Filed Jan. l2, 1940 Patented Dec. 3, 1940 'PATENT OFFICE SHUTTLE Luigi Pavia,

Allentown, Pa.

` Application January 12, 1940, Serial No. 313,532

p 5 claims. This invention relates to loom shuttles and `has for an object to provide 'animproved construction of spindle, spindle head and associated parts, whereby the spindle is automatically maintained in a central position when fitted into a shuttle body. f i

Another object of the invention is to provide in a shuttle a spindlehaving a head pivotally mounted in a box and resilient means for resisting movement from a neutral position and also from an extreme open position. An additional object ofthe invention is to provide an improved shuttle structure including a spindle which maybe solid or split at the head end, with spring-pressed rounded members for resiliently holding the spindle in a central or neutral position and acting to return the spindle to that position when permitted to do so.

A further object of the invention is to provide a shuttle with a spindle `having aspindlehead pivotally mounted in a housing whichmay have bracing feet at one end Yor jaws for receiving, the enlarged head of a quill. I I In the accompanying drawinge Fig, 1 is a top plan view of a shuttle provided `with a spindle, spindle head, a housing, and associated parts embodying the invention; Fig. 2 is a sectional view through Fig. lapproximately on `the line 2 2;

Fig. 3 is an enlarged top perspective View showing a part of a spindle, spindlehead and housing constructed according to the showing `in Figs. 1 and 2;

Fig. 4 is` an enlarged fragmentary sectional view through Fig. 2 approximately on Y, lthe line 4--4; l

Fig. 5 is a fragmentary sectional view through Fig, 4 approximately on the line 5-5; g

Fig. `6 is aview similar to Fig. 5 but showing a slightly modied construction; i I

Fig. 7 is a View similarto Fig. 6 `but showing a Vsecond modified construction;

Fig. 8 is a view showing a modified form of the invention, the head and housing ofthe device being shown in horizontal section;

Fig. 9 is a sectional view through Fig. 8 approximately on the line 9-9;

Fig. 10 is a top plan View of the left hand of the structure shown in Fig. 8, a jaw lling plate being shown in connection therewith;

Fig. 11 is a fragmentary sectional view through Fig. 10 on the line II--I I;

Fig. 12 is a perspective View of the jaw lling plate shown in Fig. 10;

Fig. 13 is a View similar to Fig. 11 but showing a modified arrangement of the jaw lling plate; and I Fig. 14 is a perspective view of the jaw filling plate shown in Fig. 13. Referring to the accompanying drawing by 5 numerals, I indicates the body of the shuttle which may be a standard shuttle body now in common use on the market. In the shuttles now on the market a yquill holder or spindle is vprovided having a head and means for holding '10 the parts in operative position.

:In the present invention there is provided a spindle 2, which maybe of any special or stand- -ard construction desired. This spindle, at the pivot end, is rigidly connected with a solid spindle head 3, which is chamfered along the line 4 whereby the spindle may be yswung upwardly to the dotted position shown in Fig. 2 when loading or unloading the quill. The headi 3 is pivotally supported by a bolt 5, which is a standard bolt 20 used in shuttles now on the market. A housing B, which is U-shaped in cross section asshown in Fig. 5, surrounds the head 3 and is provided with cutaway portions 'I which allow the head .tol swing downwardly when the spindle swings '1325V upwardly. A pair of feet 8 and 9 extend from the front bottom plate, as shown in Figs. 1 and 3. IThese feet rest in suitable notches provided in the body I and prevent any downward tilting of the housing 6. The housing 6 is provided with d apertures IU and II on opposite sides, as shown in Fig. 4. These apertures partly accommodate balls I2 and I3, which balls are pressed by coil springs I4 and I5. The 'respective balls I2 and I3 are moi/ably.4 mounted in comparatively large.A bores I6 and I 1, while the springs I4 and I5 are arranged in smaller bores I8 and I9. The apertures Ill and II are of slightly less diameter `than the diameter of the balls so that the balls may project therein a desired distance, as for instance, to a point slightly spaced inwardly from the outer surface of the housing. Instead of using balls, cylindrical members 20 having round endsZI could be used, as shown in Fig. 6. Also, as shown in Fig. 7, cylindrical members 22 may be used having a rounded cone-shaped projection 23. In all forms shown in Figs. 5 to 7 inclusive, an inclined surface is provided so that whenever itis desired to swing the spindle 2 from the position shown in Figs. 1 and 4 upwardly, the balls or similar devices will be swung in an arc away from the respective apertures Ill and II, the center of the arc being the center of bolt 5. `'Ihis will cause the respective coil springs I4 and I5 to be compressed and press the balls against the inner surface of the walls of the housing 5. When the spindle is swung upwardly, as shown in Fig. 2, the action of the springs will be to yieldingly hold the spindle in its upper or 5 outward position whereby a quill may be applied or removed whenever desired. However, when the spindle 2 is forced downwardly through the slot 24 in housing I, the balls I2 and I3 will not move completely out of the apertures I and II 10 and, consequently, whenever the spindle is released itwill quickly move back into its neutral or central position, as shown in Fig. 2. llf this spindle is swung upwardly a short distance the same action takes place. From this it will be l seen that as the springs I4 and I5 and balls I 2 and I3 function, there will be a continuous tendency to holdthe spindle 2 in its correct central position in the shuttle body I unless the spindle is manually forced to its extreme outer position, as shown in dotted lines in Fig. 2.

In the structure illustrated in Figs. l to 7 inclusive, the spindle head 3 is solid, but if desired the structure could be slightly modied, as shown in Figs. 8 to 12, where the spindle 2 has a head 2.5 divided into sections 3 and 3". The casing 6 in this form of the invention is provided with jaws 25 so as to receive the enlarged end or head 26 of the quill 2li. In case the head or end 26 of the vquill should be very thin, there is provided a jaw-filling plate 28, as shown in detail in Fig. l2. This plate is provided with a body 29 having a slot 35 through which a clamping screw 3I extends ior clamping the filling plate in any desired adjusted position. A holding or spacing mem- 35 ber 32 extends from one end of the body 29 and as shown in Fig. l0 for holding the head` 26 against the respective jaws 25 so that there will be no undesirable loose motion. If the head 26 should be a little thicker or appreciably thicker, 4,0 the lling plate 28`v could be moved to the left,

as shown in Fig. l0 or could be completely removed. l

In all forms of the invention, balls I2 and I3 are used, or round members as shown in Figs.

45 6 and '7, so that the springs acting therein will continually tend to maintain the spindle in a central correct position in respect to the shuttle body i. In case this spindle should be forced in the wrong direction, namely, through slot 24, the

50 balls and associated parts will quickly move the spindle back to itscorrect position.

In Figs. i3 and 14 another form of jaw lling plate is disclosed wherein the spacing member 32 is the same as shown in Fig. 12, but the body 55 is provided with rearwardly-'extending slotted members 33 and 34 for accommodating a threaded member or bolt 35. This form of the invention is particularly desirable where the spindle head 3 is solid as the bolt 35 may extend therethrough 60 and firmly clamp the device in any desired adjusted position.

I claim:

1. In a loom shuttle, a spindle, a head for said spindle, a housing for said head having open- 65 ings in opposite faces of suflicient size to permit said spindle to partly swing therethrough, a pin for pivotally connecting said head with said housing, said pin being positioned substantially centrally of the head, a spring pressed member carried by said head on each side of said pin acting against said housing for resiliently resisting swinging movement of said spindle in two directions, said spring pressed member also functioning to yieldingly hold the spindle in an open position and to return said spindle to a central position when moved past said central position a short distance in either of two directions.

2. In a shuttle as set forth in claim l characterized by forming the housing with laterally extending feet projecting from the bottom of the housing.

3. In a loom shuttle, a spindle, a head carrie at one end of said spindle, said head and spindle being split longitudinally from the rear end of the head to a point near the free end of the spindle; a housing for said head provided with a ,pair of straight spaced parallel perforated side the head being urged yin opposite directions springs and said members having rounded portions. y

4. A device as set forth in claim 3 characterized by the use of spherical balls tting each of the .perforations in the side walls.

5. In a shuttle, a spindle and a head, a housing for said head, said housing being formed with a pair of facing jaws, a lling plate having an apertured portion positioned on said spindle and partly filling said jaws, said filling plate having a slotted body fitting over part of said head, a threaded member extending through the slot in said body for adjustably locking said iilling plate in functioning position, a member eX- tending through said housing and said head substantially-centrally thereof, said head being provided with a pair of bores near the respective endsy extending from one side ofl the head to near the other side, one bore Ybeing on each side of said member, one of said bores opening on one yside and the other on the other side, a ball in each of said bores, said housing being provided with an aperture in line with each of said bores, said apertures being of less diameter than said bores and a coil spring in each of said bores for urging said balls as far as possible into said apertures for resiliently `locking said headto said housing and returning the headv to a central position.

l LUIGI PAVIA. 

